How "accurate" is the modern Speedy Pro, typically?

sinner · Post by **sinner** » Thu Jul 21, 2011 11:04 am

Just purchased a used 3750.50. Mine is running consistently (at least for the past 3 days) at about -20 seconds/day (versus the NIST clock). I know the Speedy Pro movement is not COSC certified and, from what I've read, is not adjusted. However, how "accurate" is it expected to be? I'll probably have a watchmaker look at it and maybe try to adjust it but are these results abnormal? Since the watch is used, I doubt "movement settling" will come into play. Besides, I was under the impression that "settling" typically means the watch runs a bit slower, not faster. Is this correct? Any help/comments would be greatly appreciated.

jimyritz · Post by **jimyritz** » Thu Jul 21, 2011 11:20 am

sinner wrote:Just purchased a used 3750.50. Mine is running consistently (at least for the past 3 days) at about -20 seconds/day (versus the NIST clock). I know the Speedy Pro movement is not COSC certified and, from what I've read, is not adjusted. However, how "accurate" is it expected to be? I'll probably have a watchmaker look at it and maybe try to adjust it but are these results abnormal? Since the watch is used, I doubt "movement settling" will come into play. Besides, I was under the impression that "settling" typically means the watch runs a bit slower, not faster. Is this correct? Any help/comments would be greatly appreciated.

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Hard to say for sure but I think it should probably be better than what you are seeing..I've read that the Lemania 1873 which I think your Speedmaster is based off of(Omega cal 861) is very accurate..

MikeyLikesIt · Post by **MikeyLikesIt** » Thu Jul 21, 2011 11:25 am

I have one that's about 4 months old and it is pretty much dead on accurate in my observations. 20 seconds a day seems unusual.

Post by **BSears** » Thu Jul 21, 2011 11:26 am

minus 20 seconds a day is pretty off, imo. Not sure if that's "typical" of a Speedy (for some reason I thought those were COSC

) but that would bug the ever living shit outta me.

When was it last serviced? Could be time for a cleaning and oiling.

Post by **matt.wu** » Thu Jul 21, 2011 11:47 am

BSears wrote:minus 20 seconds a day is pretty off, imo. Not sure if that's "typical" of a Speedy (for some reason I thought those were COSC ) but that would bug the ever living shit outta me. When was it last serviced? Could be time for a cleaning and oiling.

Flipping watches is like a game of hot-potato. Sucks if you're the one who gets it when the timer expires and the movement needs a servicing.

sinner · Post by **sinner** » Thu Jul 21, 2011 11:57 am

Yeah, that's what I was thinking. Thanks for the comments. I just needed some reinforcement.

moishlashen · Post by **moishlashen** » Thu Jul 21, 2011 11:58 am

Spec is approximately -10s/day max I believe. The one I bought from you was -12s but I've known most to keep better time-near COSC.

dshap · Post by **dshap** » Thu Jul 21, 2011 12:06 pm

Last time I checked mine it was within COSC specs.

andrema · Post by **andrema** » Thu Jul 21, 2011 12:17 pm

Never checked mine...just the automatics! I just set & wind & go with the Speedy Moon!

Zidane · Post by **Zidane** » Thu Jul 21, 2011 12:22 pm

Mine was initially -10/day and I had it regulated. Now it runs -2/day.

Looks like mine will sell on ebay. Sweet!

sinner · Post by **sinner** » Thu Jul 21, 2011 2:37 pm

Zidane wrote:Mine was initially -10/day and I had it regulated. Now it runs -2/day.

Looks like mine will sell on ebay. Sweet!

I would have bought yours in a heartbeat, if I had known you were considering a "consolidation sale"...

mfxr · Post by **mfxr** » Thu Jul 21, 2011 3:24 pm

My 3570.50 runs +5 a day. It is around 12 years old, but has had a recent service.

Zidane · Post by **Zidane** » Thu Jul 21, 2011 3:49 pm

sinner wrote:
Zidane wrote:Mine was initially -10/day and I had it regulated. Now it runs -2/day.

Looks like mine will sell on ebay. Sweet!
I would have bought yours in a heartbeat, if I had known you were considering a "consolidation sale"...

I would have given you a deal on it too.

R@cerx · Post by **R@cerx** » Thu Jul 21, 2011 4:34 pm

Mine ran +8 consistantly for the year plus I had it.

Kieron · Post by **Kieron** » Fri Jul 22, 2011 6:34 pm

The thing about the Speedy Pro is they're very easy to regulate and you can get them pretty close to perfect. If anything, I would rather have a watch that ran a few seconds fast because it's easier to set to the correct time. As others have said, yours seems to be running "time for a service" slow, unless it's had a slight knock or something...

Post by **River Rat** » Thu Jul 28, 2011 5:08 am

Mine a old one made in 1972 just had it serviced 4-5 months ago it's about -5 seconds a day.

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How "accurate" is the modern Speedy Pro, typically?

How "accurate" is the modern Speedy Pro, typically?

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Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

Re: How "accurate" is the modern Speedy Pro, typically?

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